Dubstep (and pure Dub), iirc, are beatz dance loops that invoke experimentation with trance.
I'm a novice beatz meister. As others noted, you may want some training in this before thinking grammy: Personally, I would never try to re-invent the wheel on this one ... as these grooves have evolved meticulously over the decades.
TBH, I believe the cheapest evolved dubstep loops can probably be purchased at:
http://www.producerloops.com/download-dubstep-loops-samples/ royalty free.
Once you gain such loops, you yourself would apply further expermimental textures to the dance grooves.
Blessings,